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When Heidi Klum famously walked the runway in lingerie for Victoria's Secret less than two months after giving birth to son Henry, she became the envy of moms everywhere still struggling to lose post-baby pounds.

But the 36-year-old supermodel insists there's no trick to it.

"I've never really had any special girdle machines or anything like that," she said. "For me, it's, you know, really healthy foods, exercising, playing with the children, going to the park. Normal things."

No crazy strict diets, either.

"I've never done diets," she said. "But I also do not sit on the couch with my feet up and eat one potato chip bag after the next and one burger after the other. I think you have to kind of do a little bit of everything."

It's easier to drop post-pregnancy weight it you make getting a shape a priority after giving birth, she said.

"I never really put a lot of pressure on myself, but for me personally, I feel like it is always better to get into shape immediately. I feel like if I drag it out too long, I'm not going to do it," she said. "So for me it works to kind of get back into shape, afterwards, I feel great. I can put my normal clothes back on and it makes me happy, and it's worked so far."

She's expecting a baby girl in the fall with husband Seal. The couple have two sons together and Klum has a daughter from a previous relationship.

Her greatest challenge now is dressing stylishly while her belly continues to grow. While promoting the sixth season of "Project Runway," which premieres Aug. 20 on Lifetime, Klum dazzled in a flowing chiffon blouse, black skinny jeans and stilettos.

"Don't ask me what's fashionable right now. I'm happy I can find something I can fit in," she said with a laugh. "I try to go off the beaten track and find things that aren't maternity lines … I try to find things that are a little more fun and not so basic, since I do a show about fashion."

Accessories are her latest indulgence, since they always fit and big baubles offset the belly.